Organic electronics group

Current Research Focus
Group Staff
Recent Publications
Books and Reviews
Experimental facilities
Contact information

Welcome to the website of Organic electronics Group founded at Ioffe Institute in 2006. Our group's interest focuses on experiment in condensed matter physics related to electronic, photoelectronic and optical properties of conducting polymers; polymer-inorganic nanoparticle (graphene, graphene oxide) composites, biopolymers, perovskite-based materials and organic microelectronics devices based on these polymer nanostructures.

An understanding of physical processes in conjugated polymers, organic/inorganic composites, biopolymers and devices on their basis is an important goal of our activity. We are working on new organic materials and organic/inorganic nanoparticles composites for active layers of organic light emitting diodes (OLEDs), light-emitting organic thin films transistors (LE-OFETs), polymer and composite solar cells, memory devices as well as polymer nanowires.

Current Research Focus

  • Design, electrical and optical investigation of new polymer - inorganic nanoparticles hybrid active layers for OLEDs and light-emitting OFETs.
    Progress with organic electronics including light-emitting polymers is very fast. In these days OLEDs have reached the parameters (brightness, lifetime etc.) suitable for application in cell phones and CD cameras displays; these products are available on the market already. It has been shown recently that an incorporation of semiconducting nanoparticles - quantum dots (QD) into 3D polymer matrices provides an integration of organic and inorganic materials on nanometer scale into hybrid optoelectronic structures. Such integration allows designing devices that combine the diversity and processibility of organic materials with high electronic and optical performance of inorganic nanoparticles. We investigated the effects of a semiconducting nanoparticles type (ZnO, Si, cesium lead halide nanocrystals, etc.), their concentration as well as application of an electric field on the intensity and spectra of photo- and electroluminescence (PL and EL) of a conducting polymers - polyphenylene vinylene (MEH-PPV) and polyfluorene (PFO) derivatives etc. - nanoparticles hybrid films [1-11]. Blue shift of the PL spectrum and quenching of the PL emission of MEH-PPV upon incorporation of ZnO nanoparticles are demonstrated. Application of a voltage bias to planar electrodes shifts the PL maxima towards the blue (BEHP-co-MEH-PPV:ZnO) or red (MEH-PPV:ZnO) spectral regions. Radiative recombination mechanisms imply the formation of polymer-nanoparticle complexes including "exciplex" states and charge transfer between the polymer and nanoparticles controlled by an electric field. Hybrid light-emitting organic field-effect transistors (LE-OFETs) based on PFO:ZnO and MEH-PPV:ZnO films have been designed to combine the emission properties of OLEDs with the switching properties of OFETs1. It was found that such LE-OFETs exhibit the current-voltage characteristics of ambipolar FET with saturation behaviour and operates in the hole/ electron accumulation mode. The mobility, μFET (300 K), for PFO:ZnO OFETs was found to increase drastically with increase of the concentration of ZnO nanoparticles - up to ~ 2 cm2/Vs for the PFO:ZnO OFET (1:1), which is close to the mobility of ZnO. Great increase of the EL intensity of the hybrid LE-OFETs has been observed with increasing of the concentration of ZnO nanoparticles and with application of gate bias [7,8].

    a)

    b)
    Fig.1. Schematic device structure (a) and optical output of ambipolar LE-OFET based on PFO:ZnO film (b).

    The objective of our research is developing the most promising composite organic/inorganic materials for hybrid active layers of OLEDs and LE-OFETs, where the emission color can be controlled (switched) by concentration and electric field. The research objective implies an intensive electrical and optical investigation of different semiconducting polymer-inorganic nanoparticles, polymer-perovskite composites with different polymers, perovskites, nanoparticles type and size to find out the most promising combinations as well as an intensive study of the dominant physical transport and recombination mechanism in such hybrid nanostructures [1-11]. Prospects of application of such polymer-inorganic nanoparticles composites as active layers for hybrid OLEDs (including white OLEDs), LE-OFETs, solar cells and memory chips are investigated taking into account that all these hybrid components are compatible with up-to-date flexible and printed organic electronics technology.

    1. Andrey N. Aleshin, Igor P. Shcherbakov, Olga P. Chikalova-Luzina, Leo B. Matyushkin, Maksat K. Ovezov, Anastasia M. Ershova, Irina N. Trapeznikova, Vasily N. Petrov "Photo- and electroluminescence features of films and field effect transistors based on inorganic perovskite nanocrystals embedded in a polymer matrix", Synthetic Metals 260, 116291 (2020)
    2. O.P. Chikalova-Luzina, V.M. Vyatkin, I.P. Shcherbakov, A.N. Aleshin, "Electroluminescence mechanism in light emitting field effect transistors based on perovskite nanocrystal films in a semiconductor polymer matrix", Physics of the Solid State, 62(8), pp. 1500–1505 (2020). [Fizika Tverdogo Tela, (St. Petersburg) 62(8), pp. 1333–1338 (2020)]
    3. O.P. Chikalova-Luzina, A.N. Aleshin, I.P. Shcherbakov, V.M. Vyatkin, L.B. Matyushkin, "Energy transfer in hybrid optoelectronic structures between perovskite nanocrystals and an organic matrix", Synthetic Metals, 246, pp. 230-235 (2018)
    4. A.N. Aleshin, I.P. Shcherbakov, E.V. Gushchina, L.B. Matyushkin, V.A. Moshnikov, "Solution-processed field-effect transistors based on polyfluorene - cesium lead halide nanocrystals composite films with small hysteresis of output and transfer characteristics", Organic Electronics, 50(1), pp. 213-219 (2017)
    5. A.N. Aleshin, I.P. Scherbakov, I.N. Trapeznikova, V.N. Petrov, "Field-Effect Transistors with High Mobility and Small Hysteresis of Transfer Characteristics Based on CH3NH3PbBr3 Films", Physics of the Solid State, 59(12), pp. 2486-2490 (2017)
    6. O.P. Chikalova-Luzina, A.N. Aleshin, V.M. Vyatkin, "Mechanisms of radiative recombination in ambipolar light-emitting field-effect transistors based on organic polymers and inorganic nanoparticles", Technical Physics Letters 42 (2), pp. 131-134 (2016)
    7. A.N. Aleshin, I.P. Shcherbakov, V.N. Petrov, "Increase of electroluminescent intensity in planar light-emitting diode structures based on PFO polymer - ZnO nanoparticles composite films operated by alternating-current voltages" Solid State Commun. 208, pp. 41-44 (2015)
    8. O.P. Chicalova-Luzina, A.N. Aleshin, I.P. Shcherbakov, "Specific features of energy transfer in nanocomposite films based on MEH-PPV polymer semiconductor and ZnO nanoparticles", Phys.Solid State 57 (3), pp.618-623 (2015) [Fiz. Tverd. Tela (St. Petersburg) 57(3), pp. 603-608 (2015)]
    9. A.N. Aleshin, "Light-emitting transistor structures based on semiconducting polymers and inorganic nanoparticles", Polymer Science Ser. C, 56(1) pp. 47-58 (2014) [Vysokomol. Soedin. 56 (1), pp.49-61 (2014)]
    10. A.N. Aleshin, "Organic optoelectronics based on polymer-inorganic nanoparticle composite materials", Physics-Uspekhi, 56 (6), pp. 627-632 (2013)
    11. A.N. Aleshin and I.P. Shcherbakov, "Light-emitting field-effect transistor based on a polyfluorene - ZnO nanoparticles film", J. Phys. D: Appl. Phys. 43 (31), 315104 (2010)

  • Memory devices
    The switching and memory effects in composite films and field-effect transistors based on conducting polymers, metallorganic perovskites, inorganic nanoparticles, graphene and graphene oxide flakes are investigated. It is established that the introduction of inorganic nanoparticles exhibiting strong acceptor properties into polymer matrix leads to the appearance of memory effects which manifests them in the transition of the polymer from a low conductivity to a high conductivity state. For a number of composites this transition is accompanied by a negative differential resistance region and a hysteresis in the current-voltage characteristics. It was suggested that the dominant transport mechanism in the polymer-semiconductor nanoparticles (perovskite – graphene oxide flakes) composite films is hopping conduction, which is responsible for the effects observed in these materials [1-6].
    1. A.V. Arkhipov, G.V. Nenashev, A.N. Aleshin, "Resistive switching and memory effects in composite films based on graphene oxide in a matrix of organometallic perovskites", Physics of the Solid State, 63(4), pp. 661–665 (2021). [Fizika Tverdogo Tela, (St. Petersburg) 63(4), pp. 559–563 (2021)]
    2. A.S. Berestennikov, A.N. Aleshin, "Mechanisms of charge transport and resistive switching in composite films of semiconducting polymers with nanoparticles of graphene and graphene oxide", SAINT PETERSBURG OPEN 2017. IOP Conf. Series: Journal of Physics: Conf. Series 917, 092019 (6pp.) (2017)
    3. A.N. Aleshin, P.S. Krylov, A.S. Berestennikov, I.P. Shcherbakov, V.N. Petrov, V.V. Kondratiev, S.N. Eliseeva, "The redox nature of the resistive switching in nanocomposite thin films based on graphene (graphene oxide) nanoparticles and poly(9-vinylcarbazole)", Synthetic Metals, 217, pp.7-13 (2016)
    4. P.S. Krylov, A.S. Berestennikov, S.A. Fefelov, A.S. Komolov, A.N. Aleshin, "S-shaped current-voltage characteristics of polymer composite films containing graphene and grapheme oxide particles", Physics of the Solid State 58 (12), pp. 2567-2573 (2016)
    5. A.N. Aleshin, I.P. Shcherbakov, A.S. Komolov, I.N. Trapeznikova, "Poly(9-vinylcarbazole) - graphene oxide composite field-effect transistors with enhanced mobility", Organic Electronics, Organic Electronics 16, pp.186-194 (2015)
    6. P.S. Krylov, A.S. Berestennikov, A.N. Aleshin, A.S. Komolov, I.P. Shcherbakov, V.N. Petrov, I.N. Trapeznikova, "Switching and memory effects in composite films of semiconducting polymers with particles of graphene", Physics of the Solid State 57(8), pp.1669-1675 (2015) [Fiz. Tverd. Tela (St. Petersburg) 57(8), pp. 1639-1644 (2015)]

  • Polymer and polymer-inorganic nanoparticles solar cells. Photosensitive properties of organic/inorganic composites
    Conjugated polymer-inorganic nanoparticles composites with suitable band-edge offset at the heterojunction are promising active materials for cheap flexible photovoltaic cells and photo-transistors. We have examined optical and electrical properties of different organic/inorganic composites for organic photovoltaic cells. We have investigated the photosensitive properties and mechanisms of free charge carrier photogeneration in such composites. Prospects of application of polymer, perovskite and composite solar cells and photo-transistors are analyzed [1-6].
    1. A.N. Aleshin, P.P. Shirinkin, A.K. Khripunov, N.N. Saprykina, I.P. Shcherbakov, I.N. Trapeznikova, P.A. Aleshin and V.N. Petrov, "Photoluminescence and Photoconductivity of Lead Halide Perovskite Films Modified with Mixed Cellulose Esters", Technical Physics 66 (6) 955 (2021) DOI: 10.1134/S1063784221060025
    2. N.K. Isaev, A.N. Aleshin, "Photoelectric properties of composite films based on organometallic perovskite CH3NH3PbBr3 modified with mixed cellulose ester", Physics of the Solid State, 63 (1), pp. 160–164 (2021) [Fizika Tverdogo Tela (St. Petersburg), 63 (1), pp. 152–156 (2021)]
    3. Andrey N. Aleshin, Baode Zhang, Petr A. Aleshin, Vasily N. Petrov, Irina N. Trapeznikova, Gunter Reiter, Janis Kleperis, "Photoelectronic properties of composite films based on conductive polymer PIDT‑BT and single‑walled carbon nanotubes", SN Applied Sciences 1 1101 (8 pp.) (2019)
    4. O.P. Chikalova-Luzina, D.M. Samosvat, A.N. Aleshin, "The Influence of Surface Plasmons on the Optical Properties of Composite Films on the Basis of Poly(3-Hexylthiophene), Fullerene Derivatives and Nickel Nanoparticles", Technical Physics Letters 43(8), pp. 691-693 (2017)
    5. A.N. Aleshin, I.P. Shcherbakov, I.N. Trapeznikova, V.N. Petrov, "Field-Effect Transistor Structures on the Basis of Poly(3-Hexylthiophene), Fullerene Derivatives [60]PCBM, [70]PCBM, and Nickel Nanoparticles", Physics of the Solid State 58 (9), pp.1882-1890 (2016)
    6. A.N. Aleshin, I.P. Shcherbakov, F.S. Fedichkin, "Photosensitive field-effect transistor based on poly(9-vinylcarbazole) - nickel nanoparticles composite film", Phys. Sol. State, 54 (8), pp.1693-1698 (2012)

  • Charge carrier transport in quasi-one dimensional conjugated polymers and polymer nanostructures including THz region
    A systematic investigation of charge carrier transport mechanism in both 3D doped polymer films and polymer nanowires (nanofibers and nanotubes made of different conjugated polymers by different methods) is currently on the way. We consider the applicability of various theoretical models in order to explain results on the low temperature charge transport (dc conductivity) in conducting polymer nanowires. The relationship between these recent results and the one-dimensional (1D) nature of the conjugated polymers is discussed in consideration of up-to-date theories for tunneling in 1D conductors, such as disordered Luttinger liquid, Wigner crystal, variable range hopping, etc. [8-10]. Electrical and optical properties of conjugated polymers, perovskites and their composites were studied by THz time-domain spectroscopy [1, 5, 6, 8-11]. Prospects for applications of conducting polymers and biopolymers [2-4, 7, 12-14] as nanowires, nano field-effect transistors, memory chips, etc. are analyzed.
    1. A.V. Andrianov, A.N. Aleshin, P.A. Aleshin, O.A. Moskalyuk, V.E. Yudin, "Anisotropy of a Terahertz Electromagnetic Response of Filament Microstructures of a Composite Based on Polypropylene with Carbon Nanofibers", JETP Letters 115 (1) 7 (2022) DOI: 10.1134/S0021364022010064
    2. G.V. Nenashev, M.S. Istomina, I.P. Shcherbakov, A.V. Shvidchenko, V.N. Petrov, and A.N. Aleshin, "Composite Films Based on Carbon Quantum Dots in a Matrix of PEDOT: PSS Conductive Polymer", Physics of the Solid State 63 (8) 1183 (2021) DOI: 10.1134/S1063783421080229
    3. B. Zhang, M. Clausi, B. Heck, S. Laurenzi, M.G. Santonicola, J. Kleperis, A. Antuzevičs, G. Reiter, A.N. Aleshin, and A.S. Lobach, "Changes in Surface Free Energy and Surface Conductivity of Carbon Nanotube/Polyimide Nanocomposite Films Induced by UV Irradiation", ACS Appl. Mater. Interfaces 13 (20) 24218 (2021) DOI: 10.1021/acsami.1c02654
    4. E. Dresvyanina, E. Rosova, N. Smirnova, E. Ivan'kova, O. Moskalyuk, I. Dobrovolskaya, V. Elokhovskiy, A. Aleshin, V. Yudin, "Electroactive Composites Based on Chitosan Fibers Coated with Polypyrrole", Textile Research Journal, pp. 1-14 (2021) DOI: 10.1177/00405175211006217
    5. A.V. Andrianov, A.N. Aleshin, "Terahertz absorption in composite films based on organometallic perovskite and mixed cellulose ester", Technical Physics Letters, 46(5), pp. 512–515 (2020) [Pis’ma v Zhurnal Tekhnicheskoi Fiziki, 46(10), pp. 51–54 (2020)]
    6. A.V. Andrianov, A.N. Aleshin, and L. B. Matyushkin, "Terahertz Vibrational Modes in CH3NH3PbI3 and CsPbI3 Perovskite Films", JETP Letters 109 (1), pp. 28–32 (2019)
    7. Andrey N. Aleshin, Igor P. Shcherbakov, Albert K. Khripunov, Albina A. Tkachenko, Irina N. Trapeznikova, Vasily N. Petrov, "Light-emitting flexible transparent paper based on bacterial cellulose modified with semiconducting polymer MEH:PPV", Flexible and Printed Electronics 2 (3), 035004 (9pp.) (2017)
    8. A.N. Aleshin, A.S. Berestennikov, P.S. Krylov, I.P. Shcherbakov, V.N. Petrov, I.N. Trapeznikova, R.I. Mamalimov, A.K. Khripunov, A.A. Tkachenko, "Electrical and optical properties of bacterial cellulose films modified with conductive polymer PEDOT/PSS", Synthetic Metals 199, pp.147-151 (2015)
    9. A.V. Andrianov, A.N. Aleshin, A.K. Khripunov, V.N. Trukhin, "Terahertz properties of films of bacterial cellulose and its composite with conducting polymer PEDOT/PSS", Synthetic Metals, 205 pp.201-205 (2015)
    10. P.E. Gusakov, A.V. Andrianov, A.N. Aleshin, S. Matsushita, K. Akagi, "Electrical and optical properties of doped helical polyacetylene graphite films in terahertz frequency range", Synthetic Metals 162, pp.1846-1851 (2012)
    11. A.V. Andrianov, A.N. Aleshin, V.N. Truchin, A.V. Bobylev, "Electrical and optical properties of polyfluorene thin films studied by THz time-domain spectroscopy", J. Phys. D: Appl. Phys. 44, 265101 (6pp) (2011)
    12. A.N. Aleshin, "Quasi-one-dimensional transport in conducting polymer nanowires", Phys. Solid State, 49(11), pp. 2015-2033 (2007) [Fiz. Tverd. Tela (St. Petersburg) 49(11), pp.1921-1940 (2007)]
    13. A.N. Aleshin, "Polymer Nanofibers and Nanotubes: Charge Transport and Device Applications", Advanced Materials, 18, p.17 (2006)
    14. A.N. Aleshin, H.J. Lee, Y.W. Park, K. Akagi, "One-dimensional transport in polymer nanofibers", Phys. Rev. Lett. 93, 196601 (2004)

    Group staff

    Andrey Aleshin
    (Curriculum Vitae)
    Dr. Andrey Aleshin

    Deputy Director of the Division of Solid State Electronics
    Head of Laboratory of Nonequilibrium Processes in Semiconductors,
    Professor, Sci.D.
    Member of the Academic Councils of the Ioffe Institute and the Division of Solid State Electronics of the Ioffe Institute,
    Member of the Dissertation Council D212.238.04 of the Electrotechnical University "LETI".

    2021 - awarded the medal "For contribution to the implementation of state policy in the field of scientific and technological development" by the Ministry of Science and Higher Education of the Russian Federation.

    See more (in Russian)
    Olga P. Chikalova-Lusina PhD,
    Senior Researcher
    Igor P. Shcherbakov
    (collaboration)
    PhD,
    Senior Researcher
    Petr Aleshin Engineer
    Grigorii Nenashev
    Maksat Ovezov
    Natalia Fokina
    PhD student
    PhD student
    M.S. student
    Former Group Members:
    Nabi Isaev
    Artem Arhipov
    Pavel Shirinkin
    Alena Reshetnikova
    Alexander Berestennikov
    Pavel Krilov
    Sergei Boyakov
    Fedor Fedichkin
    Pavel Gusakov


    M.S. student Munich
    M.S. student
    2019 M.S. graduated
    2018 M.S. graduated
    2017 M.S. graduated, PhD student
    2017 M.S. graduated, PhD student
    2013 M.S. graduated
    2012 M.S. graduated. PhD
    2012 M.S. graduated

    Andrey Aleshin and Alan Heeger
    Nobel Laureate 2000 in Chemistry Professor Alan Heeger has visited
    Organic Electronic Group at Ioffe Institute on October 10, 2012

    Teaching: The courses of lectures for Ph.D. students: "Electronic processes in organic and polymeric materials" School of Physics, Seoul National University, Seoul, Korea (2001); for M.S. students: "Nanomaterials" and "Organic electronics", Saint-Petersburg Electrotechnical University (LETI), St. Petersburg, Russia (2013-2018); for Ph.D. students: "Polymer and hybrid electronics: physics and device applications" in the framework of the Program: Global Initiative for Academic Network (GIAN) of Government of India Ministry of Human Resources Development in National Institute of Technology Calicut, Kerala, India (2017).

    Recent Publications

    1. A.V. Andrianov, A.N. Aleshin, P.A. Aleshin, O.A. Moskalyuk, V.E. Yudin, "Anisotropy of a Terahertz Electromagnetic Response of Filament Microstructures of a Composite Based on Polypropylene with Carbon Nanofibers", JETP Letters 115 (1) 7 (2022) DOI: 10.1134/S0021364022010064
    2. G.V. Nenashev, M.S. Istomina, I.P. Shcherbakov, A.V. Shvidchenko, V.N. Petrov, and A.N. Aleshin, "Composite Films Based on Carbon Quantum Dots in a Matrix of PEDOT: PSS Conductive Polymer", Physics of the Solid State 63 (8) 1183 (2021) DOI: 10.1134/S1063783421080229
    3. B. Zhang, M. Clausi, B. Heck, S. Laurenzi, M.G. Santonicola, J. Kleperis, A. Antuzevičs, G. Reiter, A.N. Aleshin, and A.S. Lobach, "Changes in Surface Free Energy and Surface Conductivity of Carbon Nanotube/Polyimide Nanocomposite Films Induced by UV Irradiation", ACS Appl. Mater. Interfaces 13 (20) 24218 (2021) DOI: 10.1021/acsami.1c02654
    4. E. Dresvyanina, E. Rosova, N. Smirnova, E. Ivan'kova, O. Moskalyuk, I. Dobrovolskaya, V. Elokhovskiy, A. Aleshin, V. Yudin, "Electroactive Composites Based on Chitosan Fibers Coated with Polypyrrole", Textile Research Journal, pp. 1-14 (2021) DOI: 10.1177/00405175211006217
    5. A.N. Aleshin, P.P. Shirinkin, A.K. Khripunov, N.N. Saprykina, I.P. Shcherbakov, I.N. Trapeznikova, P.A. Aleshin and V.N. Petrov, "Photoluminescence and Photoconductivity of Lead Halide Perovskite Films Modified with Mixed Cellulose Esters", Technical Physics 66 (6) 955 (2021) DOI: 10.1134/S1063784221060025
    6. A.V. Arkhipov, G.V. Nenashev, A.N. Aleshin, "Resistive switching and memory effects in composite films based on graphene oxide in a matrix of organometallic perovskites", Physics of the Solid State, 63(4), pp. 661–665 (2021). [Fizika Tverdogo Tela, (St. Petersburg) 63(4), pp. 559–563 (2021)]
    7. N.K. Isaev, A.N. Aleshin, "Photoelectric properties of composite films based on organometallic perovskite CH3NH3PbBr3 modified with mixed cellulose ester", Physics of the Solid State, 63 (1), pp. 160–164 (2021) [Fizika Tverdogo Tela (St. Petersburg), 63 (1), pp. 152–156 (2021)]
    8. A.V. Andrianov, A.N. Aleshin, "Terahertz absorption in composite films based on organometallic perovskite and mixed cellulose ester", Technical Physics Letters, 46(5), pp. 512–515 (2020) [Pis’ma v Zhurnal Tekhnicheskoi Fiziki, 46(10), pp. 51–54 (2020)]
    9. A.N. Aleshin, I.P. Shcherbakov, O.P. Chikalova-Luzina, L.B. Matyushkin, M.K. Ovezov, A.M. Ershova, I.N. Trapeznikova, V.N. Petrov, "Photo- and electroluminescence features of films and field effect transistors based on inorganic perovskite nanocrystals embedded in a polymer matrix", Synth. Met. 260, 116291 (2020)
    10. O.P. Chikalova-Luzina, V.M. Vyatkin, I.P. Shcherbakov, A.N. Aleshin, "Electroluminescence mechanism in light emitting field effect transistors based on perovskite nanocrystal films in a semiconductor polymer matrix", Physics of the Solid State, 62(8), pp. 1500–1505 (2020). [Fizika Tverdogo Tela, (St. Petersburg) 62(8), pp. 1333–1338 (2020)]
    11. A.V. Andrianov, A.N. Aleshin, and L. B. Matyushkin, "Terahertz Vibrational Modes in CH3NH3PbI3 and CsPbI3 Perovskite Films", JETP Letters 109 (1), pp. 28–32 (2019)
    12. Andrey N. Aleshin, Baode Zhang, Petr A. Aleshin, Vasily N. Petrov, Irina N. Trapeznikova, Gunter Reiter, Janis Kleperis, "Photoelectronic properties of composite films based on conductive polymer PIDT‑BT and single‑walled carbon nanotubes", SN Applied Sciences 1 1101 (8 pp.) (2019)
    13. A.N. Aleshin, I.P. Shcherbakov, D.A. Kirilenko, L.B. Matyushkin, V.A. Moshnikov, "Light-Emitting Field-Effect Transistors Based on Composite Films of Polyfluorene and CsPbBr3 Nanocrystals", Phys. Solid State 61(2), pp. 256–262 (2019)
    14. A.M. Ershova, M.K. Ovezov, I P. Shcherbakov, A.N. Aleshin, "Electrical Properties of Organometallic Perovskite Films", Physics of the Solid State 61(2), pp. 103–107 (2019)
    15. O.P. Chikalova-Luzina, A.N. Aleshin , I.P. Shcherbakov, V.M. Vyatkin, L.B. Matyushkin , "Energy transfer in hybrid optoelectronic structures between perovskite nanocrystals and an organic matrix", Synthetic Metals 246, pp. 230-235 (2018)
    16. A.N. Aleshin, I.P. Shcherbakov, E.V. Gushchina, L.B. Matyushkin, V.A. Moshnikov, "Solution-processed field-effect transistors based on polyfluorene - cesium lead halide nanocrystals composite films with small hysteresis of output and transfer characteristics", Organic Electronics, 50(1), pp. 213-219 (2017)
    17. A.N. Aleshin, I.P. Scherbakov, I.N. Trapeznikova, V.N. Petrov, "Field-Effect Transistors with High Mobility and Small Hysteresis of Transfer Characteristics Based on CH3NH3PbBr3 Films", Physics of the Solid State, 59(12), pp. 2486-2490 (2017)
    18. A.N. Aleshin, I.P. Scherbakov, A.K. Khripunov, A.A. Tkachenko, I.N. Trapeznikova, V.N. Petrov, "Light-emitting flexible transparent paper based on bacterial cellulose modified with semiconducting polymer MEH:PPV", Flexible ans Printed Electronics, 2(3), 035004 (2017)
    19. O.P. Chikalova-Luzina, D.M. Samosvat, A.N. Aleshin, "The Influence of Surface Plasmons on the Optical Properties of Composite Films on the Basis of Poly(3-Hexylthiophene), Fullerene Derivatives and Nickel Nanoparticles", Technical Physics Letters, 43(8), pp. 691-693 (2017)
    20. A.N. Aleshin, P.S. Krylov, A.S. Berestennikov, I.P. Shcherbakov, V.N. Petrov, V.V. Kondratiev, S.N. Eliseeva, "The redox nature of the resistive switching in nanocomposite thin films based on graphene (graphene oxide) nanoparticles and poly(9-vinylcarbazole)", Synthetic Metals, 217, pp.7-13 (2016)
    21. A.N. Aleshin, I.P. Shcherbakov, I.N. Trapeznikova, V.N. Petrov, "Field-Effect Transistor Structures on the Basis of Poly(3-Hexylthiophene), Fullerene Derivatives [60]PCBM, [70]PCBM, and Nickel Nanoparticles", Physics of the Solid State 58 (9), pp.1882-1890 (2016)
    22. A.V. Andrianov, A.N. Aleshin, "Modification of the terahertz electromagnetic response of the semiconducting polymer polyfluorene by grapheme oxide particles", Technical Physics Letters 42 (11), pp.1126-1129 (2016)
    23. P.S. Krylov, A.S. Berestennikov, S.A. Fefelov, A.S. Komolov, A.N. Aleshin, "S-shaped current-voltage characteristics of polymer composite films containing graphene and grapheme oxide particles", Physics of the Solid State 58 (12), pp. 2567-2573 (2016)
    24. O.P. Chikalova-Luzina, A.N. Aleshin, V.M. Vyatkin, "Mechanisms of radiative recombination in ambipolar light-emitting field-effect transistors based on organic polymers and inorganic nanoparticles", Technical Physics Letters 42 (2), pp. 131-134 (2016)
    25. A.N. Aleshin, I.P. Shcherbakov, V.N. Petrov, "Increase of electroluminescent intensity in planar light-emitting diode structures based on PFO polymer - ZnO nanoparticles composite films operated by alternating-current voltages" Solid State Commun. 208 pp. 41-44 (2015)
    26. O.P. Chicalova-Luzina, A.N. Aleshin, I.P. Shcherbakov, "Specific features of energy transfer in nanocomposite films based on MEH-PPV polymer semiconductor and ZnO nanoparticles", Phys.Solid State 57(3) pp.618-623 (2015) [Fiz. Tverd. Tela (St. Petersburg) 57(3), pp. 603-608 (2015)]
    27. P.S. Krylov, A.S. Berestennikov, A.N. Aleshin, A.S. Komolov, I.P. Shcherbakov, V.N. Petrov, I.N. Trapeznikova, "Switching and memory effects in composite films of semiconducting polymers with particles of graphene", Physics of the Solid State 57(8), pp.1669-1675 (2015) [Fiz. Tverd. Tela (St. Petersburg) 57(8), pp. 1639-1644 (2015)]
    28. A.V. Andrianov, A.N. Aleshin, A.K. Khripunov, V.N. Trukhin, "Terahertz properties of films of bacterial cellulose and its composite with conducting polymer PEDOT/PSS" , Synthetic Metals, 205 pp.201-205 (2015)
    29. A.N. Aleshin, I.P. Shcherbakov, A.S. Komolov, I.N. Trapeznikova, "Poly(9-vinylcarbazole) - graphene oxide composite field-effect transistors with enhanced mobility", Organic Electronics, Organic Electronics 16, pp.186-194 (2015)
    30. A.N. Aleshin, A.S. Berestennikov, P.S. Krylov, I.P. Shcherbakov, V.N. Petrov, I.N. Trapeznikova, R.I. Mamalimov, A.K. Khripunov, A.A. Tkachenko, "Electrical and optical properties of bacterial cellulose films modified with conductive polymer PEDOT/PSS", Synthetic Metals 199, pp.147-151 (2015)
    31. A.N. Aleshin, "Light-emitting transistor structures based on semiconducting polymers and inorganic nanoparticles", Polymer Science Ser. C 56 (1) pp. 47-58 (2014) [Vysokomol. Soedin.56(1) pp.49-61 (2014)]
    32. A.N. Aleshin, I.P. Shcherbakov, I.N. Trapeznikova "Temperature and concentration dependences of the photoluminescence of MEH-PPV:ZnO composite films with ZnO nanoparticles", Phys. Solid State 56 (2) pp. 405-411 (2014)
    33. A.N. Aleshin, "Organic optoelectronics based on polymer-inorganic nanoparticle composite materials", Physics-Uspekhi, 56 (6) pp. 627-632 (2013)
    34. A.N. Aleshin, A.D. Sokolovskaya, I.P. Shcherbakov, P.N. Brunkov, V.P. Ulin "Organic light-emitting diodes based on polyvinylcarbazole films doped with polymer nanoparticles", Phys. Solid State 55 (3) pp.675-680 (2013)
    35. A.N. Aleshin, "Solar cells based on polymer and composite (organic-inorganic) materials" , J. of Innovations, 7 (165) pp.96-108 (2012)
    36. A.N. Aleshin, I.P. Shcherbakov, F.S. Fedichkin, "Photosensitive field-effect transistor based on poly(9-vinylcarbazole) - nickel nanoparticles composite film", Phys. Sol. State, 54(8) pp.1693-1698 (2012)
    37. A.N. Aleshin, I.P. Shcherbakov, F.S. Fedichkin, P.E. Gusakov, "Electrical and optical properties of light-emitting field-effect transistors based on composite films of MEH-PPV polymer with ZnO nanoparticles", Phys. Sol. State, 54(12) pp. 2196-2201 (2012)
    38. A.N. Aleshin, I.P. Shcherbakov, V.N. Petrov and A.N. Titkov, "Solution-processed polyfluorene-ZnO nanoparticles ambipolar light-emitting field-effect transistor", Organic Electronics 12 pp.1285-1292 (2011)
    39. A.N. Aleshin, F.S. Fedichkin, P.E. Gusakov, "Memory effects in field-effect transistor structures based on composite films of polyepoxypropylcarbazole with gold nanoparticles", Phys. Sol. State 53(11) pp.2370-2374 (2011)
    40. A.V. Andrianov, A.N. Aleshin, V.N. Truchin, A.V. Bobylev, "Electrical and optical properties of polyfluorene thin films studied by THz time-domain spectroscopy", J. Phys. D: Appl. Phys. 44, 265101 (6pp) (2011)
    41. A.N. Aleshin and I.P. Shcherbakov, "Light-emitting field-effect transistor based on a polyfluorene - ZnO nanoparticles film", J. Phys. D: Appl. Phys. 43(31) 315104 (2010)
    42. A.N. Aleshin, E.L. Alexandrova, I.P. Shcherbakov, "Efficient hybrid active layers for OLEDs based on polyfluorene and ZnO nanoparticles", Eur. Phys. J. Appl. Phys. 51 p.33202 (2010)
    43. A. Choi, H.J. Lee, A.B. Kaiser, S.H. Jhang, S.H. Lee, J.S. Yoo, H.S. Kim, Y.W. Nam, S.J. Park, H.N. Yoo, A.N. Aleshin, M. Goh, K. Akagi, R.B. Kaner, J.S. Brooks, J. Svensson, S.A. Brazovskii, N.N. Kirova, and Y.W. Park, "Suppression of the magneto resistance in high electric fields of polyaceylene nanofibers", Synth. Metals 160, p.1349 (2010)
    44. Andrey N. Aleshin, Elena L. Alexandrova, Igor P. Shcherbakov, Hybrid active layers from a conjugated polymer and inorganic nanoparticles for organic light emitting devices with emission color tuned by electric field, J. Phys. D: Appl. Phys. 42(10) p.105108 (2009)
    45. A.N. Aleshin, I.P. Shcherbakov, E.L. Alexandrova, E.A. Lebedev, Effect of electric field on the photoluminescence of polymer-inorganic nanoparticles composites, Solid State Communications, 146/3-4, pp 161-165 (2008)
    46. A.N. Aleshin, H.J. Lee, S.H. Jhang, H.S. Kim, K. Akagi, and Y.W. Park, Coulomb-blockade transport in quasi-one dimensional polymer nanofibers, Phys. Rev. B, 72, p.153202 (2005)
    47. A.N. Aleshin, H.J. Lee, Y.W. Park, K. Akagi, One-dimensional transport in polymer nanofibers, Phys. Rev. Lett. 93, 196601 (2004)
    48. A.N. Aleshin, J.Y. Lee, S.W. Chu, J.S. Kim, Y.W. Park Mobility studies of field-effect transistor structures based on anthracene single crystals, Appl. Phys. Lett. 84, p.5383 (2004)
    49. A.N. Aleshin, J.Y. Lee, S.W. Chu, S.W. Lee, B. Kim, S.J. Ahn, Y.W. Park, Hopping conduction in polydiacetylene single crystals, Phys. Rev. B 69, p.214203 (2004)
    50. V.I. Kozub, A. N. Aleshin, D.-S. Suh, Y.W. Park, Evidence of magnetoresistance for nanojunction-controlled transport in heavily doped polyacetylene, Phys. Rev. B 65 p.224204 (2002)
    51. A.N. Aleshin, V. I. Kozub, D.-S. Suh, Y.W. Park, Low-temperature saturation of dephasing in heavily doped polyacetylene, Phys. Rev. B 64, p.224208 (2001)
    52. A.N. Aleshin, T. J. Kim, D.-S. Suh, Y.W. Park, H. Kang, W. Kang, The effects of pressure and magnetic field on the low temperature conductivity of FeCl4 doped polyacetylene: the influence of scattering by low-energy excitations, Phys. Rev. B 63, p.235209 (2001)
    53. A.N. Aleshin, H. Sandberg, H. Stubb, Two-dimensional charge carrier mobility studies of regioregular P3HT, Synth. Metals, 121, p.1449 (2001)
    54. V.I. Kozub and A. N. Aleshin, Transport anomalous in highly doped conjugated polymers at low temperatures, Phys. Rev. B, 59, p.11322 (1999)
    55. A.N. Aleshin, S.R. Williams, A.J. Heeger, Transport and magnetic properties of poly(3,4-ethylenedioxythiophene)/poly(styrenesulfonate) films, Synth. Metals, 94, p.173 (1998)
    56. A.N. Aleshin, N.B. Mironkov, A.V. Suvorov, I.O. Usov, J.A. Conklin, T.M. Su, R.B. Kaner, Conductivity and magnetoconductivity of polyaniline films implanted with Ar+ and Ga+ ions near the critical regime of the metal-insulator transition, J. Physics: Cond. Matter, 10, p.4867 (1998)
    57. A.Aleshin, R. Kiebooms, Reghu Menon, F. Wudl, A.J. Heeger, Metallic conductivity at low temperatures in poly(3,4-ethylenedioxythiophene) doped with PF6, Phys. Rev. B 56, p.3659 (1997)
    58. A.Aleshin, R. Kiebooms, Reghu Menon, A.J. Heeger, Electronic transport in doped poly(3,4-ethylenedioxythiophene) near the metal-insulator transition, Synth. Metals, 90, p.61 (1997)

    Books

    1. A.N. Aleshin and Y.W. Park, One-dimensional charge transport in conducting polymer nanofibers, in Handbook of Conducting Polymers, edited by Terje A. Skotheim and John R. Reynolds. Third Edition, CRC Press, 2007, Chapter 16, pp.16-1 - 16-25

    Reviews

    1. A.N. Aleshin, "Light-emitting transistor structures based on semiconducting polymers and inorganic nanoparticles", Polymer Science Ser. C, 56(1) pp. 47-58 (2014) [Vysokomol. Soedin.56(1) pp.49-61 (2014)]
    2. A.N. Aleshin, "Organic optoelectronics based on polymer-inorganic nanoparticle composite materials", Physics-Uspekhi, 56 (6) pp. 627-632 (2013)
    3. A.N. Aleshin, Charge carrier transport in conducting polymers on the metal side of the metal-insulator transition: a review, Phys. Solid State, 52(11), pp. 2307-2332, (2010) [Fiz. Tverd. Tela (St. Petersburg) 52(11), pp.2162-2184, (2010)]
    4. A.N. Aleshin, Quasi-one-dimensional transport in conducting polymer nanowires, Phys. Solid State, 49(11), pp. 2015-2033, (2007) [Fiz. Tverd. Tela (St. Petersburg) 49(11), pp.1921-1940, (2007)]
    5. A.N. Aleshin, Polymer Nanofibers and Nanotubes: Charge Transport and Device Applications, Advanced Materials, 18, p.17, (2006)
    6. A.N. Aleshin, Organic microelectronics based on polymer nanostructures, in: "Future Trends in Microelectronics: The Nano, the Ultra, the Giga, and the Bio", Wiley, NY, p.253, (2004)

    Experimental facilities

    1. Samples preparation:
      • Electronic weights RADWAG WAS 160/C/2 (0.1 mg)
      • Biohit Proline pipettors of variable volume
      • Ultrasonic disintegrator (f ~ 22 KHz).
      • Chemat Technology spin-coater KW-4A
      • Heidolph HG 3001 K heater
      • Glow-box with nitrogen atmosphere "SANPLATEC Corp." (Japan) - DX-2, hood
      • Vacuum desiccators MB "SANPLATEC Corp." (Japan)
      • Thermal evaporation plant
      • Microwave oven
      • 3D printer Picaso 3D Designer with a 3D scanner Sence
    2. Samples morphology characterization:
      • Optical microscope Leica DM 2500 M
      • Atomic force microscope P47-Solver
    3. Optical/electrical properties characterization:
      • Cary-50 (Varian) spectrometer
      • A LGI-21 pulse laser (l = 337.1 nm, Ei > 10-4 J/cm2, t ~ 10-8 s)
      • Highly sensitive fiber optic spectrometer with ultra low light scattering "AVANTES" - AvaSpec-ULSi2048L-USB2 OEM operating in the spectral region - 322-1100 nm with a spectral resolution ~ 4 nm with a photo detector with a spectral sensitivity range 300-850 nm
      • Ultraviolet light-emitting diodes LEDs, UVTOP280TO39HS with a wavelength - 285 nm for exciting of photoluminescence
      • Dc electronic measuring system with a Keithley 6487 picoammeter/voltage source and AKIP-1124 programmable voltage source for current-voltage measurements down to 4.2 K
      • Electronic measuring system for electrical and optical properties investigation of polymer films by THz time-domain spectroscopy
      • Pulse electronic measuring system for current-voltage measurements down to 77 K or 4.2 K
      • TEKTRONIX TDS 2002B
      • Liquid helium cryostats for optical and electrical experiments
      • OptCRYO198 liquid nitrogen cryostat system for optical and electrical experiments
      And others.

    Contact information

    Phone: +7 (812) 297-6245; +7 (812) 783-3905
    E-mail: aleshin AT transport.ioffe.ru
    Contact person: Andrey Aleshin

    Organic electronics group
    Laboratory of nonequilibrium nrocesses in nemiconductors
    Ioffe Institute, Russian Academy of Sciences
    Politekhnicheskaya 26,
    St.Petersburg, 194021 Russia